From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0293BC2BA83 for ; Thu, 13 Feb 2020 14:37:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C396C2073C for ; Thu, 13 Feb 2020 14:37:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=axis.com header.i=@axis.com header.b="H8nAY/KH" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727640AbgBMOhi (ORCPT ); Thu, 13 Feb 2020 09:37:38 -0500 Received: from smtp1.axis.com ([195.60.68.17]:13346 "EHLO smtp1.axis.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726282AbgBMOhh (ORCPT ); Thu, 13 Feb 2020 09:37:37 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=axis.com; l=734; q=dns/txt; s=axis-central1; t=1581604657; x=1613140657; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=P5UsYjweBuJIbchAgUmIEB7/p2uDn89NrGYV7hbXS6o=; b=H8nAY/KH4Dg1V97DhzwpUOFj5ftm78itgZCR/+Pb2cCNZyhZhfglqTce adrXHHVNZOr4lTchvBvFX8kYREF46eQPniPFYNO7h/SrtzDE9MvMZzDQi ZEP+AyFzsNtG4D9ZgBpozRCWVVsAGW0tgqMzBoxLgnZPHibAnifrWPBI0 Urx7K6v3D6dsBfEh7AiSlJr5cvITaQg1FkI7/KFZW+2+NR7Z7uKBcsqOU 15I9BxqFWwfrdvvdaeLkDenm46jW1mdVAt2U3AhLaVNdpQUM/qsGFJz// 15tFuVItdZNipuVJM/NbV90grZlyS9Xir8IoVOSo4cw/B/afMRq+5v+j/ Q==; IronPort-SDR: JWagaWtcF06hh4EEM5Ljp1d9notAD6cgCxjOhd4hvy8r+pGTb5yhHudvO62qwbf/ZM1cxZrsc+ uAEHg9HlT7tagidowRUOTlsnPxaH/Wm5jgvY70s6b3qOrBrySSNvJa9Ai3/wfQD0dXNMVjLS1v HeqQcY9G908i/CnxLYicNNpHxXhlJ7Nb7cD3wMCZ/5X+Ol8jLJAkSo5K7SCdSGq0l6SNjGKW7I CQNtFfxcsmrCtfSJQT/zatQOgpxkRhqf4ngZ6f6iTjzGOE8pp/i3Pe4q2fciDRjIRLhR3Jku85 V/g= X-IronPort-AV: E=Sophos;i="5.70,437,1574118000"; d="scan'208";a="5391028" From: Per Forlin To: , , , CC: Per Forlin , Per Forlin Subject: [PATCH net 2/2] net: dsa: tag_ar9331: Make sure there is headroom for tag Date: Thu, 13 Feb 2020 15:37:10 +0100 Message-ID: <20200213143710.22811-3-per.forlin@axis.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20200213143710.22811-1-per.forlin@axis.com> References: <20200213143710.22811-1-per.forlin@axis.com> MIME-Version: 1.0 Content-Type: text/plain Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Passing tag size to skb_cow_head will make sure there is enough headroom for the tag data. This change does not introduce any overhead in case there is already available headroom for tag. Signed-off-by: Per Forlin --- net/dsa/tag_ar9331.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/dsa/tag_ar9331.c b/net/dsa/tag_ar9331.c index 466ffa92a474..55b00694cdba 100644 --- a/net/dsa/tag_ar9331.c +++ b/net/dsa/tag_ar9331.c @@ -31,7 +31,7 @@ static struct sk_buff *ar9331_tag_xmit(struct sk_buff *skb, __le16 *phdr; u16 hdr; - if (skb_cow_head(skb, 0) < 0) + if (skb_cow_head(skb, AR9331_HDR_LEN) < 0) return NULL; phdr = skb_push(skb, AR9331_HDR_LEN); -- 2.11.0